Hi my baby boy 1.6 years old. since 1 month he has been suffering with cold and cough fever, after using of antibiotics and syrups he gets cured in 4 days but only 3 days he will be ok then after all repeats again. this happened for 3 times 8n last 40 days.. His reports says blood infection.. now again he cured but a lot of caugh .. can you please suggest best syrup for cough..